WINDOW ROCK 4 SW, ARIZONA

Monthly Total Heating Degree Days

(029410)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 199909
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1937 0.00 z 0.00 z 418.00 q 560.56 c 135.50 h 72.50 21.18 a 0.00 68.00 387.50 757.00 941.00 2807.74
1938 988.00 878.50 791.50 546.00 389.00 47.50 11.50 19.00 137.00 461.00 0.00 z 1009.50 5278.50
1939 1112.00 1186.50 827.00 457.50 298.00 77.00 2.50 2.00 102.50 524.86 b 751.50 939.00 6280.36
1940 1065.88 a 959.79 c 748.50 526.03 a 249.50 39.50 0.50 25.00 162.50 454.50 839.00 947.00 6017.71
1941 1084.00 807.00 825.63 a 720.00 335.00 187.50 11.50 21.50 218.00 543.50 775.00 1026.50 6555.13
1942 1158.50 1006.50 950.15 a 576.50 388.50 106.50 10.00 15.50 135.00 d 490.12 b 683.50 948.50 6469.27
1943 1023.50 788.50 782.50 489.50 301.50 78.10 a 2.50 4.50 147.93 a 508.50 797.00 1207.50 6131.53
1944 1288.00 994.50 965.50 753.50 421.00 166.50 7.00 18.00 186.50 507.50 957.50 1193.00 7458.50
1945 1167.50 822.50 931.50 475.50 f 334.00 156.00 1.00 2.50 207.50 472.50 928.50 1367.50 6391.00
1946 1178.00 953.50 750.00 427.00 347.50 26.50 0.00 8.00 107.00 528.50 861.50 914.00 6101.50
1947 1230.50 764.50 765.00 558.00 270.50 100.00 0.00 11.50 76.50 404.00 968.50 1106.00 6255.00
1948 474.50 o 703.00 i 1047.50 530.50 345.50 97.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2020.50
1949 0.00 z 0.00 z 0.00 z 0.00 z 359.00 106.50 5.00 16.50 126.50 544.50 655.00 1197.50 3010.50
1950 1101.00 777.50 785.00 509.50 413.00 84.50 3.50 5.50 235.00 294.50 707.00 892.00 5808.00
1951 1135.50 895.00 831.00 569.50 330.50 140.50 0.00 31.00 131.00 500.50 864.50 1162.50 6591.50
1952 1078.00 1022.00 1018.00 580.50 370.50 66.50 1.50 5.50 137.00 396.50 1027.00 1259.00 6962.00
1953 960.50 967.00 821.50 601.50 500.50 70.50 2.00 4.50 95.17 a 461.00 766.00 1141.00 6391.17
1954 1040.50 713.50 856.00 426.00 249.00 99.50 0.00 14.00 94.00 393.00 715.00 1110.50 5711.00
1955 1259.00 1111.00 823.50 618.50 369.00 140.00 16.50 2.00 118.00 394.00 775.50 915.00 6542.00
1956 900.50 1069.00 794.12 a 594.50 254.00 16.00 1.50 30.50 63.00 463.89 c 978.50 1127.88 a 6293.39
1957 1087.50 738.50 799.00 658.50 468.00 47.07 a 27.00 22.50 175.86 a 514.00 965.00 1023.50 6526.43
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1959 1127.00 961.50 855.00 534.50 349.27 a 38.50 1.00 18.50 150.50 487.00 826.00 1042.00 6390.77
1960 1318.50 1114.00 753.00 550.50 356.50 c 61.00 0.00 17.50 104.50 525.50 782.50 1149.50 6733.00
1961 1159.50 896.50 850.00 574.50 336.00 64.50 2.50 12.50 214.00 506.00 881.00 1261.00 6758.00
1962 1272.00 876.50 987.50 470.00 388.50 128.50 9.00 14.50 103.00 438.50 677.00 999.50 6364.50
1963 1318.00 822.00 866.50 620.00 238.50 106.00 0.50 15.50 55.00 330.00 762.41 a 1109.00 6243.41
1964 1273.00 1176.00 1045.00 755.50 228.50 s 138.00 2.50 44.00 177.00 420.50 929.50 1134.00 7095.00
1965 1128.50 993.50 952.00 653.50 461.50 208.00 10.50 28.00 216.50 423.00 720.00 1053.50 6848.50
1966 1201.50 1088.50 823.50 536.50 231.50 67.00 4.50 6.50 128.50 456.50 704.00 1116.00 6364.50
1967 1227.50 842.50 693.00 633.00 373.50 139.00 4.00 17.00 215.50 454.50 715.00 1277.50 6592.00
1968 1261.00 824.00 809.00 672.50 375.00 92.50 6.00 71.00 220.50 478.50 873.50 1282.50 6966.00
1969 1029.00 971.00 1006.00 541.50 300.50 99.50 0.50 5.00 123.00 616.50 872.50 1009.00 6574.00
1970 1143.00 805.50 954.00 763.50 328.50 139.50 0.00 z 11.50 248.00 649.00 774.00 1112.50 6929.00
1971 1131.50 947.50 872.50 637.50 421.50 115.00 2.07 a 2.50 213.50 602.00 855.00 1224.50 7025.07
1972 1084.50 887.50 650.50 545.00 354.50 79.00 0.00 k 28.50 f 155.50 475.50 960.00 1181.50 6373.50
1973 1260.00 946.81 a 974.00 721.00 387.50 146.50 14.00 10.91 d 210.00 509.00 834.50 1079.00 7093.22
1974 1208.00 1045.00 745.50 689.50 278.50 72.93 a 10.00 0.00 z 201.00 469.00 814.50 1210.50 6744.43
1975 1210.00 1097.00 933.00 777.00 494.50 162.00 7.50 52.50 249.31 a 575.00 915.52 a 1179.50 7652.83
1976 1242.00 898.00 936.00 641.50 360.63 a 95.50 5.50 19.00 182.00 584.00 785.00 0.00 z 5749.13
1977 1292.00 901.50 1019.00 515.50 0.00 z 41.00 3.50 3.62 a 130.00 444.00 736.00 965.50 6051.62
1978 1044.50 915.00 754.50 605.17 a 404.03 a 46.50 1.50 17.64 b 183.33 c 87.00 t 789.50 1260.00 6021.68
1979 1361.50 1037.50 903.00 652.00 401.40 b 158.79 a 165.50 69.50 o 228.33 c 329.00 m 978.50 1083.00 6969.52
1980 1080.50 910.00 969.00 665.00 463.00 29.50 l 3.00 23.50 l 50.50 k 0.00 z 786.92 d 896.93 a 5774.36
1981 955.00 905.33 a 909.50 550.71 b 298.50 f 34.00 f 0.50 j 32.00 h 0.00 z 0.00 z 403.00 m 909.00 4229.55
1982 1089.50 912.00 804.50 533.00 357.50 110.00 10.00 5.00 131.00 556.50 833.50 1090.00 6432.50
1983 1071.50 887.50 817.00 378.50 r 351.00 107.00 1.00 8.00 97.50 426.00 900.50 994.50 5661.50
1984 1150.50 929.00 772.50 608.00 135.50 72.00 2.50 3.50 110.50 625.50 771.00 1019.50 6200.00
1985 1094.00 957.50 769.00 437.50 259.50 58.50 1.50 0.00 241.00 450.50 785.50 956.50 6011.00
1986 843.50 760.00 679.50 517.50 285.50 48.00 10.50 5.50 225.50 548.50 737.00 1026.50 5687.50
1987 1140.50 904.50 871.50 470.50 353.00 25.00 5.00 17.50 135.00 340.00 801.50 1121.00 6185.00
1988 1197.00 844.50 750.00 478.50 272.50 42.00 5.50 15.00 147.00 293.00 732.50 1089.00 5866.50
1989 1170.50 830.00 546.50 295.00 193.50 44.00 3.00 8.00 86.50 439.50 689.00 967.50 5273.00
1990 1055.50 917.00 687.50 414.50 259.00 24.00 1.50 21.00 95.50 402.50 798.50 1269.50 5946.00
1991 1161.00 760.00 870.00 567.00 350.00 116.50 5.50 1.00 117.50 384.50 787.50 1106.50 6227.00
1992 1182.50 862.50 747.50 402.00 285.50 81.00 18.50 48.50 118.00 394.50 928.00 1230.50 6299.00
1993 1027.13 a 790.00 680.00 519.00 326.00 95.00 0.00 27.00 192.50 481.53 a 871.50 1043.50 6053.17
1994 1029.50 921.50 702.00 541.00 301.00 5.00 0.00 0.00 115.50 524.50 638.50 k 975.00 5115.00
1995 1073.00 669.00 720.50 590.50 393.00 116.00 8.00 2.50 100.00 m 277.50 m 673.00 1072.00 5317.50
1996 998.00 750.00 571.00 j 521.50 128.00 34.00 0.00 7.50 246.00 505.30 a 800.50 1033.69 b 5024.49
1997 0.00 z 913.50 720.50 671.50 256.00 79.50 18.00 5.50 78.10 a 545.00 791.00 1226.50 5305.10
1998 0.00 z 979.50 829.50 704.48 a 328.50 118.50 7.00 4.00 77.50 0.00 z 782.00 1045.73 a 4876.72
1999 961.50 805.78 a 459.00 l 411.00 j 116.50 q 88.50 p 17.50 l 0.00 v 48.00 q 0.00 z 0.00 z 0.00 z 1767.28
Period of Record Statistics
MEAN 1130.38 910.37 833.48 573.80 335.67 89.85 8.35 14.67 151.71 474.18 814.52 1088.67 6397.02
S.D. 110.35 114.27 109.04 99.08 77.92 45.19 22.01 14.13 55.36 78.49 90.73 116.46 471.77
SKEW -0.16 0.33 0.05 -0.07 -0.31 0.37 6.56 1.84 0.21 -0.11 0.41 0.20 0.38
MAX 1361.50 1186.50 1047.50 777.00 500.50 208.00 165.50 71.00 249.31 649.00 1027.00 1367.50 7652.83
MIN 843.50 669.00 546.50 295.00 128.00 5.00 0.00 0.00 55.00 293.00 655.00 892.00 5273.00
NO YRS 57 59 58 58 57 59 57 55 57 54 57 59 40